pki 179 hydrochloride

PKI-179 is an orally bioavailable dual inhibitor of PI3K and mammalian target of rapamycin (mTOR). In an in vitro enzymatic assay, it potently inhibits PI3K (IC50s = 8, 24, 17, and 74 nM for isoforms α, β, δ, and γ, respectively), two common PI3Kα mutants, E545K and H1047R (IC50s = 14 and 11 nM, respectively), and mTOR (IC50 = 0.42 nM). PKI-179 is selective for PI3K and mTOR over a panel of 361 other kinases at IC50 values up to 50 μM, hERG (IC50 > 30 μM), and cytochrome P450 (CYP) isoforms (IC50s > 30 μM), but does have activity for CYP2C8 (IC50 = 3 μM). It inhibits proliferation through the Akt/mTOR signaling pathway in MDA-361 breast and PC3MM2 prostate cancer cell lines in vitro (IC50s = 22 and 29 nM, respectively) and inhibits tumor growth in an MDA-361 mouse xenograft model when used at a dose of 50 mg/kg.

Potent EGFR-kinase inhibitor (IC50 = 0.7 nM). Displays >3000-fold selectivity against a panel of serine/threonine kinases. Reduces metastasis and angiogenesis in a mouse model of pancreatic cancer. Antihypertensive and orally bioavailable. Bruns et al (2000) Blockade of the epidermal growth factor receptor signaling by a novel tyrosine kinase inhibitor leads to apoptosis of endothelial cells and therapy of human pancreatic carcinoma. Cancer Res. 60 2926 PMID:10850439 |Ulu et al (2013) Epidermal growth factor receptor inhibitor PKI-166 governs cardiovascular protection without beneficial effects on the kidney in hypertensive 5/6 nephrectomized rats. J.Pharmacol.Exp.Ther. 345 393 PMID:23528611 |Kaspersen et al (2012) Activity of 6-aryl-pyrrolo[2,3-d]pyrimidine-4-amines to Tetrahymena. Bioorg.Chem. 44 35 PMID:22832269

PKI-179 is a potent, orally active compound that functions as a dual PI3K/mTOR inhibitor. It demonstrates IC50 values of 8 nM for PI3K-α, 24 nM for PI3K-β, 74 nM for PI3K-γ, 77 nM for PI3K-δ, and 0.42 nM for mTOR. Additionally, it is effective against E545K and H1047R mutations, with IC50s of 14 nM and 11 nM, respectively. In vivo studies have shown that PKI-179 possesses anti-tumor capabilities[1][2].